G. D. Dracoulis,1 G. J. Lane,1 H. Watanabe,1,2,* R. O. Hughes,1,† N. Palalani,1 F. G. Kondev,3 M. P. Carpenter,4 R. V. F. Janssens,4 T. Lauritsen,4 C. J. Lister,4 D. Seweryniak,4 S. Zhu,4 P. Chowdhury,5 W. Y. Liang,6 Y. Shi,6 and F. R. Xu6 1Department of Nuclear Physics, R.S.P.E., Australian National University, Canberra, A.C.T. 0200, Australia 2RIKEN Nishina Center, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan 3Nuclear Engineering Division, Argonne National Laboratory, Argonne Illinois, USA 4Physics Division, Argonne National Laboratory, Argonne, Illinois, USA 5Department of Physics, University of Massachusetts Lowell, Lowell, Massachusetts 01854, USA 6School of Physics, Peking University, Beijing 100871, China (Received 21 December 2012; published 22 January 2013)